Propaganda-style slogans appear on the individual packs, which cost 4,000 won (about N1,200) each, including: "All hail moisture for all women of the North and South!"

Since the sheet masks were launched by skincare company 5149 in June, more than 25,000 have reportedly been sold in South Korea, which is known for its love of beauty products.

These Kim Jong Un face masks are flying off the shelves in South Korea. Dubbed "nuke" masks, they will relieve the tension in your skin by moisturizing it with mineral water from Mt. Paektu, manufacturer claims. pic.twitter.com/s4l9lfugXx

The masks claim to contain moisturising mineral water from the Paektu Mountains, a sacred active volcano on the border of China and North Korea, where Mr Kim and South Korean leader Moon Jae-in posed at the end of a three-day summit in September.

Many South Koreans appear to have eschewed Mr Kim's tyrant image, instead calling him cute and funny on social media.

This is despite it being illegal to speak favourably about the North Korean government in the South since 1948.